Extended Cauchy Model for Tunable Refractive Index of Titania Nanoparticles at Visible Region

Abstract

The extended Cauchy model is derived based on the experimental data for describing the mass fraction-, crystallite size-, and calcination-dependent refractive index of anatase and rutile TiO₂ nanoparticles. This model fits the experimental data of TiO₂ nanoparticles well in the visible spectral region. There is a tunable correlation between the refractive index of TiO₂ nanoparticle and the anatase nanoparticle size at visible region. Moreover, there is a near correlation between experimental and calculated Abbe number at 588 nm.

Keywords:

• Abbe number
• extended cauchy equation
• refractive index
• TiO₂ nanoparticle
• UV-vis spectrum

Notes

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